1903455463391 has 2 divisors, whose sum is σ = 1903455463392. Its totient is φ = 1903455463390.

The previous prime is 1903455463313. The next prime is 1903455463421. The reversal of 1903455463391 is 1933645543091.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1903455463391 is a prime.

It is a super-2 number, since 2×1903455463391² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1903455403391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951727731695 + 951727731696.

It is an arithmetic number, because the mean of its divisors is an integer number (951727731696).

Almost surely, 2^{1903455463391} is an apocalyptic number.

1903455463391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1903455463391 is an equidigital number, since it uses as much as digits as its factorization.

1903455463391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5248800, while the sum is 53.

The spelling of 1903455463391 in words is "one trillion, nine hundred three billion, four hundred fifty-five million, four hundred sixty-three thousand, three hundred ninety-one".